// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_EVENTHANDLER_H_
#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_EVENTHANDLER_H_

#include <string>

#include "content/common/content_export.h"
#include "content/common/media/media_stream_options.h"

namespace content {

class CONTENT_EXPORT MediaStreamDispatcherEventHandler {
public:
    // A new media stream have been created.
    virtual void OnStreamGenerated(
        int request_id,
        const std::string& label,
        const StreamDeviceInfoArray& audio_device_array,
        const StreamDeviceInfoArray& video_device_array)
        = 0;

    // Creation of a new media stream failed. The user might have denied access
    // to the requested devices or no device is available.
    virtual void OnStreamGenerationFailed(
        int request_id,
        content::MediaStreamRequestResult result)
        = 0;

    // A device has been stopped in the browser processes.
    virtual void OnDeviceStopped(
        const std::string& label,
        const StreamDeviceInfo& device_info)
        = 0;

    // A device has been opened.
    virtual void OnDeviceOpened(
        int request_id,
        const std::string& label,
        const StreamDeviceInfo& device_info)
        = 0;

    // Failed to open the device.
    virtual void OnDeviceOpenFailed(int request_id) = 0;

protected:
    virtual ~MediaStreamDispatcherEventHandler() { }
};

} // namespace content

#endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_DISPATCHER_EVENTHANDLER_H_
